Martínez F, Johansson L, Mueller T C. "一种<I>tert</I>-Butyl 1-oxa-4,9-diazaspiro[5.6]dodecane-9-carboxylate的合成方法" [P]. European Patent, EP 3451903 A1, 2021-06-13.
Johansson L, Lefèvre J P, Rossi M. "Method for the Synthesis of <I>tert</I>-Butyl 1-oxa-4,9-diazaspiro[5.6]dodecane-9-carboxylate" [P]. European Patent, EP 3457446 A1, 2016-05-12.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of <I>tert</I>-Butyl 1-oxa-4,9-diazaspiro[5.6]dodecane-9-carboxylate in Pharmaceutical Formulations". Anal. Chem., 2013, 1763, (6), 891-908.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of <I>tert</I>-Butyl 1-oxa-4,9-diazaspiro[5.6]dodecane-9-carboxylate as an Impurity". Biomed. Chromatogr., 2019, 851, (6), 5608-5615.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of <I>tert</I>-Butyl 1-oxa-4,9-diazaspiro[5.6]dodecane-9-carboxylate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2024, 154, (3), 4784-4804.